Traction-plow.



H. W. LEAVITT.

TRAGTION PLOW. AP'PLIUATION FILED 1111.11.14, 1910.`

2 SHEETS-SHEET l4 Patented May 2, 1911.

111W. LEAVITT.

TRAGTION PLW. 'PPLIGATION FILED 111111.14. 1910. 990,993. Patented May2,1911.

2 SHEETS-SHEET board or disk type, ditching tools or thelike.`

' and lhave kprovided suitable means for pivi main frameandat the reaiffend has the 'usual' l caster wheel-f p l -A novel feature of myinvention consists .wheels withreferenoe to' each other and withreference tothe draft connection between. the supplemental frame andthemain frame, the,`

vention will be pointed out in the claims.

is a side elevation; Fig. .2 is a plan view, the engine being omitted inthe last named fig ally rectangular form. having the side members, 10,and rear and front members, `l 1-12.

non-rotative axle,14, on which is mounted Beit known ,that I, HARRY W.Lnavlrr, of the city-of De Kalb, countyof Dekalb, and

and useful Improvements in Traction-Flows, of which` the following isaspecifcation.

' My invention relates to a machine comprising a main frame providedwith steering andtract-ion wheels'and an engine for pro- .traction plowwhich are delineated in the' iTED' STAT' Nr muon.

HARRY W. Lnlivrrr, oF'DE Kama, ILLINOIS.

Specication of Letters Patent.

Patented May?. 19111.y

. Application led March 14., 1910. Serial No. 549,189.

To y.all 'wiz-om it may concern:

State of Illinois, have invented certain new peiling the same and whichis provided with a flexibly supported frame, in which maybe mountedearth-working devices of 'any desoriptiomsuc'h as gang ypl'owsof themold I haveshown my iin-'proved traction plow as providedjwithfthreemold board plow-s mounted in suitablerelation to each other,

in;` a peculiari arrangement of the traction said traction wheels beingmounted upon; diiferent parallel axes instead -of being alinedas in theusual construction.

.The advantages'of these several novel .feai tures of'construction' willbe hereinafter de-l scribed. andthe various nov'el features andcombinations of devicescomprising myin In the accompanying drawings;Figure 1 ure, and Fig. 3 is a front end view 'showing themanner ofattaching the front axle to the main frame.l V The principal elements ofmy improved drawings comprise a main frame of generwliich may besuitably cross-brnccd, as indicated at 13. The front .end of the main.framehas-secured theretman oscillating but the steering wheels, 15-15,having the usual controllingl means, 16. A gasolene or other 'suitableengine, indicatedat,17, is mounted upon the main fiame,'preferablybetween the axes of the traction Wheels, 16. The trae@ tion wheels aremounted uponfstubj shafts, oneof which is placed in advance of theother, so that the axes ofrotation of the sai-d 'traction wheels areparallel. to each other but notin alinement. Practically therefore, themam frame is balanced upon theseshort axles and has two non-alinedpoints of support, .thus preventing the v rocking ofthe frame over theaxes of .the traction wheels and avoiding the placing of the weight ofythe machine and the draft ofthe plows upon lthe steering wheels-Thisjarrangement also affords greaterrigidity to the structure.

' Asvwill be seen, ,the front end of the main frame has a `single pointf supportand the rear end two points of support. `Therefore the frame issupported at but three points.

This is particularly advantageous, as'if' one of the traction orsteeringwheels drops into a depression or. .rises to' sunnonnt anobstacle, the frame is not .stra'inedatany point support, '14. Themotive power of the engine vis transmittedto the traction wheels throughthe driving shaft, 18, andthe usual `:sprocket chains, lil-19,20indicating the usual di'erential gear on the 'driving shaft.

To support the .earth working-devices, I

.employ a supplemental frame composed 'of -the members, 21-22-23 and 24,terminat ing in a support, 25, for the caster Wheel, E26.

yhe front member, 23, of said frame may have rigidly secured thereto,the cross member, 27, shownin the -forrn of an angle bar,

the plow beams, 28-'29-`30, being connected togetherY by thecrossmember, 31, and also to the cross member, 27. The rear end of thesupplemental frame is flexiblyconnectedl to the 'main frame by means ofthe chainsor equivalent flexible supports, v`32-83 3l1- The forward endof the supplemental frame the main frameby means ofthe-cables,35 and 36.which' are connected to "the hand levers. 37 and 38, pivoted on the mainframe -and having the usual segment racks and pawls for locking them inthe adj-usted position. said cables, 35 and 316, passing over pulleysshown in llottedlines 1n Fig. 1. rl `lie supplemental frame has a draftconnection from the contend of the mam frame oom is flexibly andadjustably supported from posed of flexible elements, such asIl thechains, 39-40, connected to the clevis, 41, at midlength of the crosselement, 31, joining the front ends of the plow beams. The draft chain,39, is arranged in the line of draft 'and the draft chain, 40, divergesfrom the point of connection, 4l, forwardly to the front end of the,`main frame toward the land-side," the connection of lthe front end ofthe draft chains being shown in the form of eye-bolts having 'adjustingnuts, llf2-43.v

By means o this arrangement ,of the draft chains and by-providing themwit'h adjust' ing means, the side draft of the plows may be corrected,the chain, 34, at the rear of thefgang plows coperating in this result.

From the foregoing description it will be seen that the weight of themachine as well asV the load imposed by the draft of the earth-workingdevices is received mainly' Imore, the supplemental frame may b eadjusted or raised and lowered at its forward end, or it may be rocked;that is, raised or lowered at either side without disturbing theadjustment of its opposite side and without changing they alineinent ofthe plow bodies relative to -each othei.- It will be ob.

served that the location of the supplemental or plow 'frame is such thatthe point of the leading plow is in advance of the. axis f the reartraction wheel and it'resnlts thatsuch point, may be readily carriedover an obstruction such as the approach to a bridge, by the forwardlydisposed traction wheel; .that the supplemental frame being flexiblysupported, may be adjusted as before described, byl reason of the factthat the draft connection is not only flexible, butis extended from thesupplemental frame forwardly to the front end ofthe main frame, thelength of this connection and the flexible character of the support-sforthe supplemental frame permitting various adjustments withoutdisturbance from the pull of the draft connections. Furthermore, it willbe seen that the` i Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents,

arrangement of the traction Wheels affords greater stability to themachine when used stationarily for the purpose of driving othermachines, such as feed cutters, corn shellers and the like, and that theflexible conditions described permit of an adjustment of the plowswithina wide range. Obviously also, various types of earth-workingimplements may be used on my improved tractor by adapting a suitableframe thereto, the -liexible connections of the supplement-al frame tothe main frame permitting ready attachment and detachment. j

I have not shown the drivers seat, the steering wheel and otheraccessories, all of which, it will be understood will be suitablydisposed upon the main frame in convenient positions. V

As various modifications of-my invention will readily suggest themselvesto' one skilled in the art, I do not limitmyself to the preciseconstruction herein shown and described.

.l claini: v

l. A traction plow comprising, in combination, a main frame, steeringWheels and non-alined traction Wheels, and a supplemental frame carryingearth-working implements mounted on said main frame at pointssubstantially between the axial center lines of said non-alinedtractionwheels, vsub'- stantially as described. n

2. A traction plow comprising', in com-y bination, a main frame,steering wheels and.

non-alined traction wheels, anda supplemental frame carryingearth-working implements having connections to said main frame at pointsclose to theaxia'l center lines of saidnon-alined traction wheels,whereby a force is transmitted froinsaid supplen'icntal frame? \to saidnon-alined wheels through said connections in a line substantiallycoincident with a vertical line through the axes of said wheels,substantially as described.

3. A traction gang plow comprising a mainframe, steering and tractionwheels journaled to y'said frame, a plow carrying frame flexiblysupported beneath said main frame, one of said traction wheels beingjournaled to said main framein front of a point of support of said plowframe .and the other of saidtraction wheels being journaled in the rearof' a point lof support of said plow frame, substantially as described.

HARRY W. LEAVITT. 'lVitnesses v JOHN A. DowDALL, BERT` Burris.

Washington, D. C.

